Notification of a mobile unit out of coverage
First Claim
Patent Images
1. A communication system comprising:
- a mobile unit coupled to a cellular telephone network and a data communication network, the mobile unit operable to transmit, using the data communication network, a message that the mobile unit will no longer receive service from the cellular telephone network; and
a platform coupled to the cellular telephone network and the data communication network, the platform operable to receive the message that the mobile unit will no longer receive service from the cellular telephone network and, in response, to cease attempts to communicate with the mobile unit using the cellular telephone network.
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Accused Products
Abstract
A communication system includes a mobile unit that communicates with a platform using a cellular telephone network or a data communication network. The mobile unit informs the platform when it is out of coverage or out of service to reduce or eliminate unsuccessful attempts to communicate with the mobile unit. The communication system also supports the transmission of data using the data communication network.
195 Citations
32 Claims
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1. A communication system comprising:
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a mobile unit coupled to a cellular telephone network and a data communication network, the mobile unit operable to transmit, using the data communication network, a message that the mobile unit will no longer receive service from the cellular telephone network; and a platform coupled to the cellular telephone network and the data communication network, the platform operable to receive the message that the mobile unit will no longer receive service from the cellular telephone network and, in response, to cease attempts to communicate with the mobile unit using the cellular telephone network. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile unit comprising:
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a cellular telephone coupled to a cellular telephone network; a data transmitter coupled to a data communication network; and a processor coupled to the cellular telephone and the data transmitter, the processor operable to determine that the cellular telephone will no longer receive service from the cellular telephone network and, in response, to direct the data transmitter to transmit a message that the mobile unit will no longer receive service from the cellular telephone network. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A telecommunication platform comprising:
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a first link coupled to a cellular telephone network and operable to communicate with a mobile unit equipped with a cellular telephone; a second link operable to receive a call to be delivered to the mobile unit; a data receiver coupled to a data communication network, the data receiver operable to receive a message generated by the mobile unit indicating that the mobile unit will no longer receive service from the cellular telephone network; and a processor coupled to the data receiver, the processor operable to prevent delivery of the call to the mobile unit upon reception of the message that the mobile unit will no longer receive service from the cellular telephone network. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for communicating at a mobile unit, the mobile unit comprising a cellular telephone coupled to a cellular telephone network and a data transmitter coupled to a data communication network, the method comprising the following steps performed at the mobile unit:
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determining that the cellular telephone will no longer receive service from the cellular telephone network; and transmitting a message that the mobile unit will no longer receive service from the cellular telephone network using the data transmitter and the data communication network. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A method for communicating comprising the following steps performed at a telecommunication platform:
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receiving a call to be delivered to a mobile unit having a cellular telephone coupled to a cellular telephone network; receiving, at a data receiver coupled to a data communication network, a message that the mobile unit will no longer receive service from the cellular telephone network; and preventing delivery of the call to the mobile unit upon reception of the message that the mobile unit will no longer receive service from the cellular telephone network. - View Dependent Claims (29, 30, 31, 32)
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Specification